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Recent Accounting Guidance Leasing ASU - Balance Sheet Impact of Adoption (Details) - USD ($) $ in Millions | Mar. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
--- | --- | --- | ---
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Property, plant and equipment, net of accumulated depreciation | $ 12,083 |  | $ 12,186
Other Assets | 2,476 |  | 1,810
Short-term borrowings and finance lease obligations | 3,205 |  | 2,160
Accrued and other current liabilities | 4,400 |  | 4,233
Long-term Debt | 6,320 |  | 5,812
Other noncurrent obligations | $ 2,052 |  | 1,620
As Reported [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Property, plant and equipment, net of accumulated depreciation |  |  | 12,186
Other Assets |  |  | 1,810
Short-term borrowings and finance lease obligations |  |  | 2,160
Accrued and other current liabilities |  |  | 4,233
Long-term Debt |  |  | 5,812
Other noncurrent obligations |  |  | $ 1,620
Accounting Standards Update 2016-02 [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Property, plant and equipment, net of accumulated depreciation |  | $ 9 |
Other Assets |  | 758 |
Short-term borrowings and finance lease obligations |  | 1 |
Accrued and other current liabilities |  | 234 |
Long-term Debt |  | 8 |
Other noncurrent obligations |  | 524 |
Updated [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Property, plant and equipment, net of accumulated depreciation |  | 12,195 |
Other Assets |  | 2,568 |
Short-term borrowings and finance lease obligations |  | 2,161 |
Accrued and other current liabilities |  | 4,467 |
Long-term Debt |  | 5,820 |
Other noncurrent obligations |  | $ 2,144 |

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